HBASE-29082: Support for custom meta table name suffix #6632
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anmolnar
reviewed
Jan 29, 2025
| * Added in HBASE-XXXXX to support having multiple hbase:meta tables (with distinct names )to | ||
| * enable storage sharing by more than one clusters. | ||
| */ | ||
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| String suffix_val = String.valueOf(conf.getStrings( | ||
| HConstants.HBASE_META_TABLE_SUFFIX, HConstants.HBASE_META_TABLE_SUFFIX_DEFAULT_VALUE)); | ||
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| if (suffix_val == null||suffix_val.isEmpty()) { |
Contributor
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Use proper formatting:
if (suffix_val == null || suffix_val.isEmpty()) {
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| LOG.debug("Default value for Hbase meta table is being chosen."); | ||
| return TableName.META_TABLE_NAME; | ||
| } | ||
| LOG.debug("Suffix value for Hbase meta table is being chosen."); |
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Instead of emitting 2 separate log messages, add a single one at INFO level.
LOG.info("Meta table name: {}", META_TABLE_NAME);
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| String suffix_val = String.valueOf(conf.getStrings( | ||
| HConstants.HBASE_META_TABLE_SUFFIX, HConstants.HBASE_META_TABLE_SUFFIX_DEFAULT_VALUE)); | ||
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| if (suffix_val == null||suffix_val.isEmpty()) { | ||
| return TableName.META_TABLE_NAME; | ||
| } | ||
| return valueOf(NamespaceDescriptor.SYSTEM_NAMESPACE_NAME_STR, "meta_" | ||
| + suffix_val); |
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Don't duplicate the logic, put it at a common place: keep it here or in the other class, or put it in a common utility.
| Path tableDir = CommonFSUtils.getTableDir(rootDir, TableName.META_TABLE_NAME); | ||
| if (fs.exists(tableDir) && !fs.delete(tableDir, true)) { | ||
| LOG.warn("Can not delete partial created meta table, continue..."); | ||
| throw new HBaseIOException("Specified meta table already exists."); |
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We might not need this I believe for 2 reasons:
- we should keep the original logic here for backward compatiblity,
- you throw this exception only in the case when HBase tried to delete
tableDir, but it wasn't successful
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anmolnar
reviewed
Feb 11, 2025
| } | ||
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| public static TableName initializeHbaseMetaTableName(Configuration conf) { | ||
| String suffix_val = String.valueOf(conf.getStrings( |
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Meta table suffix is just a string. I think this should be conf.get(...)
anmolnar
reviewed
Feb 11, 2025
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| protected final Configuration conf; | ||
| public InitMetaProcedure(Configuration conf) { | ||
| this.conf = conf; | ||
| } | ||
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Contributor
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You probably don't need this constructor at all if you return TableName.META_TABLE_NAME in getTableName() method. Actually don't need to modify this class at all.
Contributor
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my patch: #6683 |
anmolnar
reviewed
Feb 12, 2025
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| if (suffix_val == null || suffix_val.isEmpty()) { | ||
| LOG.info("Meta table name: {}", META_TABLE_NAME); | ||
| return TableName.META_TABLE_NAME; | ||
| } |
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This is incorrect: META_TABLE_NAME is being initialized in this method, so you end up returning null value.
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retest |
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The PR build had issues which are already fixed by @ndimiduk on master. See: https://issues.apache.org/jira/browse/HBASE-29163 |
Member
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Yep if you pull and rebase you'll have necessary fixes to the build env on all branches. |
Contributor
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@kabhishek4 I've updated the feature branch, please rebase your patch. |
(cherry picked from commit 7ab9d52)
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🎊 +1 overall
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💔 -1 overall
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Failing tests are either flaky or also failing on the master branch. We're going to raise new jira ticket to fix them. Merging this PR to move forward. |
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Add support for custom meta table name and ability to start cluster on the same storage location.
New config setting:
hbase.meta.table.suffix default "" Adds a suffix to the meta table name: value=’test’ -> ‘hbase:meta_test’